I have an Asus A8N-SLI Deluxe system that I built that's been working flawlessly for over 2 years, and today (after routine summer cleaning), will not boot past splash screen. I tried clearing CMOS, however I can get as far as the big Asus AI splash screen where you can press 'del' to enter bios, and I get no response from keyboard. I checked all cables connection and connections, but can find no problems. I don't have a USB keyboard to try, but don't know if that would work before entering OS anyway. Any ideas would help.
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Re: No PS/2 keyboard response on boot.
Try a different keyboard and then try a different mouse. Try unhooking the hard drive and see if it goes past the logo, if it still doesn't then go ahead and disonnect the keyboard and mouse and see if it goes past the logo screen. If it doens't go past the logo then take the memory and cpu out and blow so air onto it to make sure specs of dirt or dust are no affectng it.
you can also try different memory as well to see if it stops locking up. Otherwise if you go thru these steps and you still have the lockups, its not going to be the keyboard are mouse causing the problems, its the motheboard.
You can try a usb keyboard and it might work but that would mean you have a bad ps2 port on the motherboard and as long as that doesn't bother you then the computet will be fine.
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Here is the manual for your motherboard (since describing a diagram probably isn't very useful...) http://dlcdnet.asus.com/pub/ASUS/mb/socket939/A8N-SLI/e2024_a8n-sli.pdf
You want to look at pages 27-35, they describe what you need to plug into the motherboard. Basically make sure you have connected:
1) 24-pin power cable (from power supply) 2) 4-pin power cable (for CPU from power supply) 3) Any case fans with 3/4 pin connectors. 3) hard drives (SATA or IDE) 4) USB front panel ports 5) Audio front panel ports 6) Case plugs (power LED, hdd LED, power switch, and reset switch).
Just because BIOS is recognizing the RAM doesn't necessarily mean it is usable. Also, ASUS recommends that you have the same amount of RAM in each bank. Another point they make is that your motherboard does not support double-sided DIMM chips.
I would refer to the manual for their specific instructions on proper RAM configuration:
If you are concerned that the memory stick might be bad, swap it out with one of your older ones, and see if your system boots and performs as it should. If not, then you know it is bad. My guess is that if you populate the memory slots with 4 gb, the system will recognize and make all of it available to you.
ASUS EZ_PLUG is optional for SLI mode...this model of your motherboard has an SLI that connect 2 video card using pci express...if this is only you problem for bugging the EZ_plug not connected,you can disable that in BIOS setup...
Yes, you do. Your board was built with the idea to use 2 graphic boards to get great video
NVIDIA® SLI™technology revolutionizes PC performance by combining multiple PCI Express GPUs in a single and scalable system! Gamers and hardcore enthusiasts know that dual GPUs mean increased, supercharged 3D graphics and performance
If your CPU or memory were an issue your Asus board would sound off with BIOS beeps. Asus uses the Award BIOS & you can see what these beeps mean at the link below. Regaurding your PC not able to boot is an issue with your PCIE/PEG video card-in relationship with BIOS setting & the SLI switch card mode that came with your board. When running 1PEG video card you must set this in the BIOS to Auto & you need your SLI switch card connected in its slot. By default, the EZ Selector card is set for a single graphic card. When you install dual PCIE graphic cards on A8N-SLI series motherboards, please make sure EZ Selector card set to the Dual Video Card side and properly inserted. Link to Award Bios beep codes: http://www.bioscentral.com/beepcodes/awardbeep.htm
Will come in handy.
Reading the FAQ's at Asus site will help you better understand your A8N-SLI Deluxe. You'll need to fill in the, "Please Select the Product" first: http://support.asus.com/faq/faq.aspx?SLanguage=en-us